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|Title:||Achieving amorphous ultralong room temperature phosphorescence by coassembling planar small organic molecules with polyvinyl alcohol||Authors:||Wu, Hongwei
Bindra, Anivind Kaur
|Keywords:||Science::Chemistry||Issue Date:||2019||Source:||Wu, H., Chi, W., Chen, Z., Liu, G., Gu, L., Bindra, Anivind K., ... Zhao, Y. (2019). Achieving amorphous ultralong room temperature phosphorescence by coassembling planar small organic molecules with polyvinyl alcohol. Advanced Functional Materials, 29(10), 1807243. doi:10.1002/adfm.201807243||Journal:||Advanced Functional Materials||Abstract:||Development of novel strategies for achieving amorphous ultralong organic phosphorescence (UOP) at room temperature is highly desired. Herein, a simple approach is reported by coassembling small organic molecules with polyvinyl alcohol (PVA) to afford amorphous UOP. These small organic molecules with planar conformation present quenched triplet state emission in an excessive stacking solid state. When coassembling these molecules with PVA, their planar structures are well confined in coassembly films. Such a confined environment leads to restricted molecular rotation and vibration, permitting these molecules to show stable triplet state and generate UOP. In control studies, corresponding structurally distorted molecules are also coassembled with PVA. However, they exhibit very weak or quenched UOP, since distorted structures with molecular rotation and vibration could easily dissipate the excitation energy in dilute film state. By employing this polymer confinement strategy, multicomponent luminescence dyes are further coassembled with PVA for multicolor luminescence displays, providing multicolor, uniform, and flexible luminescence films. This work demonstrates a general strategy of employing small organic molecules to coassemble with PVA to obtain amorphous UOP, which greatly expands the scope of organic molecules for developing simple but useful UOP films.||URI:||https://hdl.handle.net/10356/137630||ISSN:||1616-301X||DOI:||10.1002/adfm.201807243||Rights:||This is the peer reviewed version of the following article: Wu, H., Chi, W., Chen, Z., Liu, G., Gu, L., Bindra, Anivind K., ... Zhao, Y. (2019). Achieving amorphous ultralong room temperature phosphorescence by coassembling planar small organic molecules with polyvinyl alcohol. Advanced Functional Materials, 29(10), 1807243. doi:10.1002/adfm.201807243, which has been published in final form at 10.1002/adfm.201807243. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||SPMS Journal Articles|
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